These new Epiphones were based on existing Matsumoku guitars, sharing body shapes, and hardware, but the Epiphone line was somewhat upgraded, with inlaid logos and a 2x2 peghead configuration. The Matsumoku factory had been producing guitars for export for some time, but the 1820 bass (alongside a number of guitar models and the 5120 electric acoustic bass) were the first Epiphone models to be made there. If you want to discuss or add data provided here, please leave a comment.īy the end of the 1960s, a decision had been made to move Epiphone guitar production from the USA (at the Kalamazoo plant where Gibson guitars were made), to Matsumoto in Japan, creating a line of guitars and basses significantly less expensive than the USA-built models (actually less than half the price).
As with all Gibson 'rules', these should not be treated as absolute. Gibson, no doubt, used parts that were available, and no doubt CTS and other pot supply companies shipped replacement parts from time to time. I have seen many seemingly-original Gibson pots with codes that do not follow the expected Gibson numbering system, and many that just do not conform to the correct resistance values as described in the schematics. Some models seem to conform to the part lists, some differ WIDELY. Click on the links below to get guitar info for your pot, or pot info for your guitar Gibson pots are typically marked on their backs (most CTS brand) or their sides (particularly earlier Centralab examples). For more information on Gibson pot codes (and others), see Reading Pot Codes
The manufacturers code has six (1950s) or seven digits, starting with 137 (CTS) or 134 (Centralab), and ending in format y/ww or yy/ww.
One is the manufacturers id code with date, and another is the Gibson part number. Pots usually have several identification numbers.
Most 60s-70s Gibson potentiometers were made by CTS (Chicago Telephone Company), although other manufacturers did also supply pots to Gibson. You can use this database to find correct Gibson pots, or correct value replacement pots for your vintage Gibson guitar.Īs always with Gibson, there a probably many vintage guitars that don't conform to the catalog descriptions, which are often incomplete and may even contain errors. This Gibson pot database contains part numbers with respective models for all Gibsons from the early 1960s until the early 1980s as described in the various replacement parts lists distributed by Gibson.
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